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5th Special Research Seminar of School of Engineering "Wireless Power Transfer and Harmonic Suppressed Antenna with Ferrites+"

Professor Yang-Ki Hong, The University of Alabama

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Professor Yang-Ki Hong
Professor Yang-Ki Hong

E. A. "Larry" Drummond Endowed Chair Professor of the Department of Electrical and Computer Engineering (ECE)

Director of NSF IUCRC-UA: Center for Efficient Vehicles and Sustainable Transportation Systems (EV-STS)

Director of Magnetic Materials & Device Laboratory

Graduate Program Director of Department of Electrical and Computer Engineering

Professor of Materials Science Ph.D. Program

The University of Alabama

Abstract

A simple wireless power charging (WPC) antenna system for use in simulating power transfer efficiency with and without ferrite and metallic object (battery case) developed by their group will be presented. Suitable magnetic properties and ferrite sheet thickness were identified.

The simulation results suggest that magnetic loss tangent (tan δμ) and permeability (μ) need to be less than 0.05 and higher than 125 at 13.56 MHz, respectively, to achieve at least 75% of the transfer efficiency of the WPC antenna without ferrite and the metallic object.

The improved ferrite core developed by their new sintering method meets criteria identified by the transfer efficiency simulation and is a good candidate for 13.56-MHz wireless power transfer charging antenna system.

A multiple-ferrite-cored patch antenna (MFC-PA) to suppress harmonic radiation over the frequency range of 1 to 10 GHz and obtain wide suppressing bandwidth is also developed. Its suppression performance was compared to those of the conventional patch antenna (PA), photonic bandgap patch antenna (PBG-PA), and defected ground structure patch antenna (DGS-PA). Ferrite loading is a unique approach to suppress any harmonic radiation.

Details

Time and Date
Tuesday, June 19, 2018, 10:45 - 12:00
Venue
Subjects
Students and researchers from within and outside of the Institute, in particular those who are interested in Electrical and Electronic, Mechanical, and medical care

School of Engineering

School of Engineering
—Creating New Industries and Advancing Civilization—

Information on School of Engineering inaugurated in April 2016

School of Engineering

Schools, Departments, and Institute for Liberal Artsouter

Contact

School of Engineering

Department of Electrical and Electronic Engineering

Tokyo Institute of Technology

Shigeki Nakagawa

Email nakagawa@ee.e.titech.ac.jp

Update : June 5, 2018

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